/Engine/Plugins/MovieScene/MovieRenderPipeline/Source/MovieRenderPipelineCore/Public/Graph/MovieGraphNode.h
Returns true if the dynamic property with the provided name has been overridden, else false. Note that the name provided should not be prefixed with "bOverride_".
bool IsDynamicPropertyOverridden ( const [FName](API\Runtime\Core\UObject\FName) & InPropertyName ) const